Brawley Formation
| Brawley Formation Stratigraphic range: Pleistocene | |
|---|---|
| Type | Geologic formation |
| Overlies | Ocotillo Formation |
| Location | |
| Region | Colorado Desert, California |
| Country | United States |
| Type section | |
| Named for | City of Brawley |
The Brawley Formation is a geologic formation in the Colorado Desert of southern California.
It occurs in northwestern Imperial County and eastern San Diego County.[1]
Geology
Sandstone and mudstone of the Brawley Formation accumulated between ∼1.1 and ∼0.6–0.5 Ma in a delta on the margin of an arid Pleistocene lake.[2] It is in the San Jacinto Fault Zone area, including in the San Felipe Hills.
Fossils
It preserves fossils from the Pleistocene Epoch of the Quaternary Period, during the Cenozoic Era.[3]
See also
- Quaternary California
- Geology of Imperial County, California
- Geology of San Diego County, California
- List of fossiliferous stratigraphic units in California
- Paleontology in California
References
- ↑ USGS.gov: "Pleistocene Brawley and Ocotillo Formations: Evidence for initial strike-slip deformation along the San Felipe and San Jacinto fault zonez, Southern California"; Journal of Geology; by S.M. Kirby, S.U. Janecke, R.J. Dorsey, B.A. Housen, V.E. Langenheim, K.A. McDougall, and A.N. Steeley.
- ↑ Be.press.com: ""Pleistocene Brawley and Ocotillo formations"; by S. M. Kirby, et al.
- ↑ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 8 July 2014.
| Quaternary | ||
|---|---|---|
| Pleistocene | Holocene | |
| Early | Middle | Late | Preboreal | Boreal | Atlantic | Subboreal | Subatlantic | |
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